| 摘要 |
PURPOSE:To realize more than one display mode by one light emitting means by providing the light emitting means which has different flickering periods according to the feed, ending forecast, and ending of a film on a finder optical path. CONSTITUTION:While a film is left enough, a switch 11 is placed at a side (a) and a switch 10 is turned off. As a film advance is started, an intermittent signal is outputted from a winding signal generating means 3 and smoothed eventually by a monostable multivibrator circuit 4 to input an H-level signal to an AND circuit 6. At this time, a light emitting element 13 flickers at the output period of the output terminal 2b of a frequency divider 2. When the film advance is stopped abnormally, a monostable multivibrator output descends to a level L and the light emitting element turns off. When the remaining quantity of the film decreases below a prescribed value, the switch 10 turns on and the light emitting element flickers at the output period of an outut terminal 2a. When the film comes to the end, the switch 11 is changed over to a side (b) and the light emitting element continues to be in the lighted state. |
